Lock and latch



@ct Q 1923. EAYQZW W. s. WHTTEN LOCK AND LATCH Filed'Maw 16. 1921 to, preferably by means shown in Figs. 1 and 2. The don 30 is pro vided with a sleeve 32 which its upon the shaft 31 and is non-rotatably secured thereof a set-screw Said dog isalso proviied with upward-- ly-projecting thumb piece 345 in." which it may be moved into or out of operative position by hand, and with a stop plate 35 which is adapted to rest on the upper margins of the plates 20, 21 when the dog is in operative position, as shown in land 2; -The rock shaft also carr, head or disc 36 which is non-rotatably secured upon the inner end thereof adapted to be engaged by the usual p of a cylinder lock 38 of any approved. type. which is mounted in. the door with its hole at the side thereof opposite that on which the latch is mounted. The air-:angement is such that when the pin 3'1 is caused to revolve about the axis of the lock 38 by V meansrof a key inserted in said lock it will engage the head 36 and through it willrock the shaft 31 and correspondingly move the dog 30. By this construction, when. the door is closed, by nieansof the key the latch bolt 14 may be locked in its operative position by turning the dog 30 down to the position shown in Fig. 2, so that it engages the edge of the shank 12 and pre ents it from swinging away from the screw The latch bolt 14 will, therefore, be held in its, operative position. This however, will not prevent the latch bolt from being released by any person atthe opposite side of the door. as

the dog 30 may be moved'out of operative position ,by means {of the "thumb piece 34 which is accessible from that side; In like manner the dog 30 may be mo ed into oper ative position from one side of the door by means of the thumb piece,'or it may be sinr ilarly moved'from the opposite side of the door by means of a key. When the dog 30 is thrown back out of operative position the latch bolt may be swung out of operative position by means of the pin 26 by a person on'the opposite side of the door.

By the construction described I provide a very simple but substantial latch and lock which cannot easily "get out of order, and which. may readily be-applied to either side of a door in such manner that when the locking device'is not in operative position the latch may be actuated from either side of the door, but whiohmay also be locked so that while it may be unlocked without a key from that side; of the door on which it is mounted it can be unlocked from the other side only by'means' of a key. lt'will be noted that if the latch is applied to the op posite side of the door from that shown in the drawings it is necessary only to reverse the pin'26 and the position of the dog 20 and head36 on the Jrockshaft V y then inserting the cylinder lock 38 from the 0pposite side of the door its actuating pin 37 will be in operative relation to said head.

lVhat I claim my invention and desire to secure by Letters Patent, is

1. A latch comprising a frame adapted to e secured to one side of a'door, a shank iv tally mounted at its upper end in said me, a latch bolt at the lower end of said rank and normally projecting beyond one end of said frame, a pin connected with and projecting; laterally from said shank adjacent to the pivot thereof, and extending through a slot in the door to which the latch is applied, for moving said latch bolt out of operative position, and an oper t arm connecte ith the upper end of said shank.

A. latch comprising frame adapted to be secured to one side of door, a shank pivotally mounted at its upper end in said frame, a latch bolt at t to lower end of said. shank and normally projecting beyond one endof said frame, a pin connected with and projecting laterally from said shank adjacent to the pivot thereof, and extending through a slot in the door to which the latch is applied, for moving said latch bolt out of operative position, and an operating arm connected with the upper end of said shank and lying in substantially the same plane as the shank.

' 3. A latch comprising a frame adapted to be secured to one side of a door, a shank pivotally mounted at its upper end in said frame, a latch belt at the lower end'of said latch is applied.

' 4. A latch comprising a frame adapted to be secured to one side of a door, a shank pivotally 'mounted at its upper end in said. frame, a latch bolt at the lower end ofsaid shank and normally projecting beyond one end of said frame, means whereby said latch bolt may be moved out of operative position, a rock-shaft mounted in said frame adjacent to said shank, a locking dog non-rotatably mounted on said rock-shaft and movable by the rocking thereof into or out of engagement with said shank, and key-operated means mounted in the door and operatively associated with said dog for actuating the same.

5. A latch comprising a frame adapted to be secured to one side of a door, a shank pivotally mounted at its upper end in said es/0,250 as bolt may be moved out of operative position, a roclnshaft mounted in said frame adjacent to said shank, a locking dog mounted on said rock-shaft and movable by the rocking thereof into or out of engagement with said shank, key-operated means mounted in the door and having an actuating pin, and a head carried by said rook-shaft and adapted to be engaged by said pin for moving said doc into or out of operative position.

6. A latch comprising a frame adapted to be secured to one side of a door, a shank pivotally mounted at its upper end in said frame, a latch bolt at the lower end of said shank and normally projecting beyond one end of said frame, means whereby said latch bolt may be moved out of operative position, a rocleshaft mounted in said frame adjacent to said shank, a locking doe mounted on said rock-shaft and movable by the rocking adapted to be mounted thereof into or out of engagement with said shank. key-operated means mounted in the door and operatively associated With said dog for actuating the same, and a thumb piece carried by said dog for moving the same into or out of operative position.

7. A latch comprising a frame adapted to be secured to the side of a door, a swinging latch member supported by said frame, a locking member mounted in said frame adjacent to said latch member and adapted to rock into or out of engagementtherewith, a cylinder lock adapted to be mounted in the door, and reversible devices associated with said cylinder lock and said locking member for actuating" said lockin member by means of said cylinder look,

at either side of the door.

WILLIAM S. WITTEN.

whereby the latch is v 

